github
diff --git a/‎lib/actions-util.js‎
Lines changed: 9 additions & 2 deletions b/‎lib/actions-util.js‎
Lines changed: 9 additions & 2 deletions
diff --git a/‎lib/actions-util.js.map‎
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diff --git a/‎lib/init-action.js‎
Lines changed: 12 additions & 0 deletions b/‎lib/init-action.js‎
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diff --git a/‎lib/init-action.js.map‎
Lines changed: 1 addition & 1 deletion b/‎lib/init-action.js.map‎
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diff --git a/‎src/actions-util.ts‎
Lines changed: 9 additions & 1 deletion b/‎src/actions-util.ts‎
Lines changed: 9 additions & 1 deletion
diff --git a/‎src/init-action.ts‎
Lines changed: 23 additions & 0 deletions b/‎src/init-action.ts‎
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@@ -426,6 +426,14 @@ export function getWorkflowRunAttempt(): number {
   return workflowRunAttempt;
 }
 
+export class FileCmdNotFoundError extends Error {
+  constructor(msg: string) {
+    super(msg);
+
+    this.name = "FileCmdNotFoundError";
+  }
+}
+
 /**
  * Tries to obtain the output of the `file` command for the file at the specified path.
  * The output will vary depending on the type of `file`, which operating system we are running on, etc.
@@ -442,7 +450,7 @@ export const getFileType = async (filePath: string): Promise<string> => {
     core.info(
       "The `file` program is required, but does not appear to be installed. Please install it.",
     );
-    throw e;
+    throw new FileCmdNotFoundError(`${e}`);
   }
 
   try {
 
@@ -6,6 +6,7 @@ import { safeWhich } from "@chrisgavin/safe-which";
 import { v4 as uuidV4 } from "uuid";
 
 import {
+  FileCmdNotFoundError,
   getActionVersion,
   getFileType,
   getOptionalInput,
@@ -15,6 +16,7 @@ import {
 import { getGitHubVersion } from "./api-client";
 import { CodeQL } from "./codeql";
 import * as configUtils from "./config-utils";
+import { addDiagnostic, makeDiagnostic } from "./diagnostics";
 import { EnvVar } from "./environment";
 import { Feature, Features } from "./feature-flags";
 import { checkInstallPython311, initCodeQL, initConfig, runInit } from "./init";
@@ -362,6 +364,27 @@ async function run() {
             logger.warning(
               `Analyzing Go on Linux, but failed to install wrapper script. Tracing custom builds may fail: ${e}`,
             );
+
+            if (e instanceof FileCmdNotFoundError) {
+              addDiagnostic(
+                config,
+                Language.go,
+                makeDiagnostic(
+                  "go/workflow/file-program-unavailable",
+                  "The `file` program is required, but does not appear to be installed",
+                  {
+                    markdownMessage:
+                      "CodeQL was unable to find the `file` program on this system. Ensure that the `file` program is installed on the runner and accessible.",
+                    visibility: {
+                      statusPage: true,
+                      telemetry: true,
+                      cliSummaryTable: true,
+                    },
+                    severity: "warning",
+                  },
+                ),
+              );
+            }
           }
         } else {
           // Store the location of the original Go binary, so we can check that no setup tasks were performed after the